2026-05-28
In many municipal wastewater treatment plants, aeration is the single largest energy consumer — and in MBBR systems, this challenge becomes even more critical.
Unlike conventional activated sludge systems, aeration in MBBR does not only supply oxygen for biological treatment. It also has a second important function: keeping the bio media continuously moving inside the reactor.
This means operators are paying energy costs for both oxygen transfer and hydraulic mixing at the same time.
So why do some MBBR projects experience extremely high aeration energy consumption?
Here are several common reasons:
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